IP2022 User’s Manual—Peripherals www.ubicom.com 281 4.6.7 SxRCNT Register 7 6 5 4 0 BITORDER    RxCRSCTRL1:0 RXACNT4:0 Name Description BITORDER Bit order for transmit and receive 0 =   LSB first
1 =   MSB first RxCRSCTRL1:0 Carrier sense status and interrupt control
0x =   No interrupt. Software can poll the RXXCRS bit in             the SxINTF register for carrier status.
10 =   Interrupt on carrier detection
11 =   Interrupt on loss of carrier RXACNT4:0 Receive shift count, actual number of bits received (read-
only). Exceptions occur during the last transfer: RXACNT = 0 if bit count is less than 8
RXACNT = 8 if bit count is greater than or equal to
8, but less than 16
RXACNT = 16 if bit count is greater than or equal
to 16 and the RXSCNT4:0 field in the SxRCFG
register is 16